ASTM B628 Ag-Cu vs. AWS BNi-9

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while AWS BNi-9 belongs to the nickel alloys. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is AWS BNi-9.

ASTM B628 Silver-Copper Eutectic Electrical Contact Alloy AWS BNi-9 (N99612) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		83
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.36
Poisson's Ratio		0.3

Shear Modulus, GPa		31
Shear Modulus, GPa		72

Tensile Strength: Ultimate (UTS), MPa		350 to 760
Tensile Strength: Ultimate (UTS), MPa		580

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		780
Melting Completion (Liquidus), °C		1060

Melting Onset (Solidus), °C		780
Melting Onset (Solidus), °C		1060

Specific Heat Capacity, J/kg-K		280
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.4

Common Calculations

Stiffness to Weight: Axial, points		4.6
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		9.5 to 21
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		11 to 18
Strength to Weight: Bending, points		18

Thermal Shock Resistance, points		16 to 34
Thermal Shock Resistance, points		19

Alloy Composition

Aluminum (Al), %		0 to 0.0050
Aluminum (Al), %		0 to 0.050

Boron (B), %		0
Boron (B), %		3.3 to 4.0

Cadmium (Cd), %		0 to 0.050
Cadmium (Cd), %		0

Carbon (C), %		0
Carbon (C), %		0 to 0.060

Chromium (Cr), %		0
Chromium (Cr), %		13.5 to 16.5

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Copper (Cu), %		26.6 to 29
Copper (Cu), %		0

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0 to 1.5

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0

Nickel (Ni), %		0 to 0.010
Nickel (Ni), %		77.1 to 83.3

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.020

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

Silver (Ag), %		71 to 73
Silver (Ag), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.020

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.050

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		0

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5